Valve.



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VALVE. APPLICATION man APR. s, 191s. Patented Apr. 8, 1919 zSHEETS-SHEET {wen/$624.? @www Tlveom S. T. `\ULSO\LV `MUIS.

APPUcATmN man APR. a, m5.

Patented Apr. 8, 1919.

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SVEN fr. NELSON', or CHICAGO, ILLINOIS, ASs'IGNoR To SULLIVAN MACHINERYp CCMPANY. oFfBosToN, MASSACHUSETTS, A CoaPoRATioN oir-MASSACHUSETTS,

` VALVE.

drawings, is a specification, like characters on the drawingsrepresenting likeI parts.

This invention relates toimprovements in valves and more particularly toautomatically acting intake and discharge valves tor 'aseous fluidcompressors. The objects and features of the invention will best beunderstood from the following description, taken in connection with theaccompanying drawings, of a portion of a compressor equipped with intakeand discharge valves embodying one form of in v invention and selected`tor the purpose of illustration, it being understood that the inventionin its true scope is definitely set forth by the claims.

Figure 1 is a central longitudinal section of a portion of a. compressorprovided with intake and discharge valves embodying in v invention Fig.a`section'al view on line ot Fig. 1, looking toward the left;

Fig. 3 is a sectional view on line 3-3 ot Fig. 1, looking towardtheright;

Fig. 4 is an elevation of Ihe discharge. valve;

Fig. 5 is an cle 'ation' of the intake valve;

` Fig. G is an elevation of the discharge valve viewed from therighthand side ot Fig. 4;

Fig. 7 is an elevation of -a guard or stop for the intake valve;

Fig. S is an elevation of the same vieii'ed from the right hand Side ofFig. 7;

Fig. 9 a -moditied' form ot' discharge valve Fig'. 10 is a modifiedtorni of intake valve. Referring to Figs. 1 and 2 of the drawings, Ihave there shown a grscous fluid coinpressoiembodying one form of myinvention selected for illustration, said compressor including acylinder 2, within which a piston 4 works in theusual ina-iiner. TheIcylinder head (lis herein .shown as comprising a main head 8 and a`supplementall head 10, secured to the eylinderbya plurality ot studs 12.This construction hasbeen selected by reason of greater convenience of.

manufacture and assembly it the parts.

Specification of Letters Patent.

. Application filed April 8, 1915. Serial No. 20,077.

The supplemental head l() isherein Shown' as chainbercd and partitionedto forni ansff intake chamber 14 and a discharge chamber municatingdirectly with a discharge. pas-.i sage22 through one or more ports :24.Pret erably, the supplemental'cylinder head 1.()-

will be provided with cover plates 2G and 28 for chambers 14 and 1G,respectively, thus rendering they intake and discharge valves` readilyaccessible Jfor the purpose ot' ins'pec- 2 tion, without necessitatingthe removal ot the entire head. Herein, the'. coverplate 2G ispreferably secured inplace by a series of screws 30, andthe cover.platelb b v a series ot screws 32. l

f The intake. and discharge valves may be, and herein. are, quitesimilar to each other;

but they differ in certain inspects,y owing.

principally to the'ditference'in requirement which necessitatesvariationsiin their valve' seat and in their nioiintiing.` f

As shown in Figs. luaiid 5, the intake.

valve includes a body 34, interposed between a valve seat 36 and a guardor stop 38,A said guard or stop serving to limit the opening movement ofthe valve.- In the form herein shown, the valve seat 3G is-in the for-mof'a plate ot generally segmental shape, secured receive the. screws 40,and within'its mar- A.

ginal portion the )late is-provided with a pliiralitv of slot-s Fig 5)indicated by the reference charactei-'s 44, 45, 4G, 48, 50, 52,54,

56, 5S, (it), (S2. (t4 and forming tongues 66./ (3S, .70, 72, 74, 7G,78, 80, 82, 84, 8G.

Said

tongues are connected at their free ends by a band 8S, said tonguesthemselves thus constituting bands extending from said marginalAportion` 42 to said connecting band 88.

In the intake valve, the marginal portion 42 l I extends all aroundthetongu'e'sor bands 66,

(5,8, 86, but that fportion of said marginal portion 42 which. isadjacent the A110` Patented Apr. s, i919. e

Thissheet or plate is herein provided connecting band SS is separatedfrom the latter by a slot 90, connected at either end to the slots 41.and 6-1, respectively.

The tongues or bands constitute elastic valves which overlie andnormally close Silita'bly formed apertures in the valve seat 36. Ifdesired, there may be a plurality of apertures foreach tongue or band,as hereinafter described in connection with the discharge valve; but forthe purpose of illustrating two desirable forms of valve seats, thevalveseat 36 is herein shown as being provided such connection otl thewith a plurality of apertures. 92. 94, 96, 98, 100` 101, 102, 10-l. 106,168. and 110, generally corresponding' with the tongues or bands otl thevalve bod' as to shape and location. though somewhat smaller than saidtongues or hands in order that the marginal portions ot' the latter maynormally rest againstthe valve-seat about the margins of said apertures.

It is tovbe noted that as the tongues or bands 66, 68, L H6. are allconnected at one end to the rectilinear part of the marginal portion l2of the 'alve body and at their other ends to the connecting` hand SS.said tongues. or bands will all buckle or flex together aboutsaidrectilinear portion ot' the marginal portion 12. that is to say, byjoining the free ends of the tongues a single plate or valve is formed.having unbroken portions to cover the passages ,or openings in the valvelseat and intermediate broken or removed portions. alld adapted tobuckle or fiex as a whole about the rectilinear part of the marginalportion 42 ot' the valvebody. The construction has this advantage, amongothers. that. the tongues or bands 66. 6H. 7() S6 heilig' connected atboth ends,

there. would be no loose or broken parts.

should any of said tongues or bands break. '.lhis might be ot'considerable importance, particularly in the ease of large compressors.The guard or stop 3S. Fig. 7, lnay be and herein is identically outlinedwith the valve body and comprises a marginal portion 112 suitablyperforated to receive the screws 40, and a plurality of slots 114, 116,11S, 120. 122, 12J., 126, 12s, 1:30, 132, 134. and 136, forming tonguesor bands 13S, 140, 142, 14:4, 116, 148, 150,."152, 154. 156 and 15S,corresponding to zthe tongues or bands of the valve body just describedand connected at their free ends by a connecting band 166, similar tothe band 88 of the free, ends of the tongues 0r bands of said guardisnot essential.

The, valve guard differs. however, from the valve body described, inthat it is relatively thick and inflexible', ,in order that its tonguesor bands may act as stops for the tongues or bandsof the valve body. Itis to be noted also that the tongues of the guard or stop are bent. orcurved out of the plane 'alve body, but` of the marginal portion of theguard, in order to permit the necessary opening movement of the tonguesor bands of the valve body. This construction is illustrated in detailin Fig. 7.

Owing to the described form and arrangement of the valve, a relativelylarge ei'ective area of the intake is assured.

In order to provide for the passage of the gaseous fluid from the intakevalve into the c vjlindeuitself, the main head S is appropriatelyapertured, and preferably is provided with a multiplicity of similiperforations 162, so Athat in case'of breakage in the, valve the pieceswill not become lodged in the end ot' the cylinder and cause damage. Themain head S is provided with a recess 164 into which the tongues orbands of the guard or stop project, and it' the free ends of said bandsare connected by a connecting band, such as 160 above referred to, themain head will of course be provided with a corrcspondingly shapedrecess to receive said band.

Referring now more. particularly to Fig. l. the discharge valve. in theform illustrated in said tigure, consists preferably of a plate ofrelatively thin, flexible. and preferably elastic sheet material, whichin practice, as inthe casef'of the intake valve, is made of temperedspring steel. This plate. is pro vided with slots 166, 16S, 170, 172,171, 176 178. 180. 182 and 184, thus forming a plurality of tongues 186.18S, 190, 192, 194, 196. 198. 200. 202 20-1, and 206, said tongues pro-`iectiug from a marginal portion 20S and being joined together at theirotherends h v a connecting band 210. 'lhe marginal portion 20S isperforated to receive a plurality of screws 212. This valve. body isherein interposed between a valve Seat 21-1, constituting a part ofthemain head S. and a stop or guard 216. The valve body and the guard aresecured in place b v the screws 212, in coperation with a clamping bar211 The va'lve seat 214 is provided with aprpropriate apertures. whichthe tongues or bands 186, 18S 206, overlie, and in this instancel thereis provided-a vplurality of perforations for each ot' Said tongues orbands. This construction is preferredto that of the slots described inconnection with the intake.

valve. for the reason that, where each Yalve.

port is made up of'a number of small perforations, a better support isprovided for the alve tongues or bands and there is less likelihood ofbreakage than where each tongue or band is supported only at its marginon the valve seat. In the. construction shown there are several rows ofsuch perfor-ations, herein designated by the reference characters 220.222, 221, 22e, 22s, 230, 231, 23e, 23s', and 240, one series or row 'foreach valve tongue.

-lt will be seen that in the case of the portions separated byintermediate broken ont or removed portions; a valve seat provided withapertures which said unbroken portions overlie and normally close; meansto secure said plate in fixed relation to said valvel seat along asingle line, the construction and arrangement being such that said platewill buckle or flex as a. whole about said line.

In a valve for permitting the flow ot' fluid in one direction butpreventing its flow in the opposite direction, the combination ot anelastic val\' 'bo l v adapted to be flexed by the pressure ofthe fluidand provided with slots forming bands extending from a marginal portionand joined at their other ends and, beingseparated by said slots; avalve seat provided with apertures which said bands over'lie andnormally close; and a stop or guard similarly provided with slotsforming bands joined at both ends to marginal portions and respectivelyoverlying the bands of the valve-body` the latter being 'Iiiterposedbetween said seat and said stop.

l. In a valve for permit-ting the tlow of fluid in one direction butpreventing its flow in the opposite direction, the combination of anelastic valve-body adapted to be flexed by the pressure of the fluid andprovided with slots forming hands extending from a marginal portion andjoined at their otherI ends, said bands being separated by said slotsand progressively decreasing in length trom one point toanother: a valve.seat provided with apertures which said bauds overlie and normallyclose: and a stop or guard similarlyprovided with slots torming` bandsjoined at both ends to marginal portions and respiaftively overlying thebands ot the valve-body` the latter being interposed between said seatand said stop.

5. ln a valve lor permitting the flow ot fluid in one direction butprevt-nting its flow in the. opposite direction. the Combination ot anelastic valve-body adapted to be flexed by the pressure ot the fluid andprovided with slots forming bands extending trom a Amarginal portion andjoined at than,I other ends. said bands being` separated b v said slots;a valve seatprovided with a plurality ot' series ot' jwrtorations, oneseries for eaeh band. which said bands overlie and norn'ially close; anda stop or guard similarly provided with slots forming bands joined atboth ends to marginal portions and respectively overlying the bands olIthe valve-bmly, the latter being interposed between said seat and saidstop. Y

6.4 l'n a valve for permitting the flow of fluid in one direction butpreventing its flow in` the opposite direction`r 'in combination, anelastic valve-body7 ol generally segmental form adapted to be flexed bythel pressure ot' the fluid and provided with slots forming bandsextending` t'rom a marginal portion and joined at their other ends` said4flow in the opposite,`

,elastic valve-body having tion and provided with slots forming a seriesbands being separated by said slots; a valve seat provided wit-haperturesvhieh said bands overlie and normally close; and a stop orguard similarly provided with slots forming bands joined to marginalportions at both ends and respectively overlying` the bands of thevalve-body, the latter being interposed between' said seat and saidstop.

7. ln a valve for permitting the flow ol' fluid in one direction butprevent-ing its' direction, in combination, an elastic valve-bodyadapted to be flexed by the pressure of the fluid and provided withslots forming bands extending from a marginal portion and joined attheir other ends, said bands being separated by said slots; a valve seatprovided with apertures which said bands ovelie and normally close; astop or guard similarly provided with slots forming bands joined at bothends to marginal portions and respectively overlying the bands of thevalve-body, the latter being interposed between said seat and said stop;and an apertured mounting for said val've-body and stop, said mountingbeing recessed to receive said stop.

S. ln a valve t'or permitting the flow ot' fluid in one direction butpreventing its flow in the. opposite direction, in combiinltion` an amarginal porot elastic bands projecting from said marginal portion andjoined at their other ends, said bands being entirely surrounded by saidmarginal portion and being adapted to be flexed by the pressure of5 thetluid; means for securing` said marginal portion; a valve seat providedwith apertures which said bands overlie and normally close; and means-for limiting the opening movement o'tl said valve-body bands.

t). As a. new article ot manufacture, a valve-body consistingv of arelatively thin elastic plate ot' generally segmental .form having amarginal portion and a plurality of bands connected at one end to saidmarginal portion and at the other end to a cur`v viliuear connectingband. i

1t). AS a new article of manufacture, a valve-body consisting ot arelatively thin elastic plate ot' generally segmental form having amarginal portion and provided with a plurality of slots forming a groupot bands entirely7 surrounded by said marginal portion and joinedthereto and to a eonneet-ing band.

l. ln a valve for permitting the low of fluid in one direction butpreventing its fl0w in the opposite direction` the combination of anelastic valve-body adapted to be flexed by the pressure of the fluid andprovided with slots forming bands joined at both ends and separated-bysaid slots, said bands progres` sively decreasing in length from onepoint to another; and a valve seat provided with apertures which saidSbands oveilife and no1.'- lnally close.

12. ln a Valve lier permitting tlie tionT of fluid in one direction lontpreventing its liew in tlie opposite direction, in combination, anelastic valvebody olf generally segmental forni adapted to be flexed bythe 1pressure ot the fluid and provided with slots 'forming bandsextending 'frointhe marginal portion of said valve-body and connected attheir other ends, said bands being separated by said slots; and a valveSeat provided with apertures which said bands overlie and normallyclose.

13. ln a valve for permitting;- the liow of fluid in one direction butneventing its flow in the opposite direction, in combination, an elasticvalve-bodyliaving; a marginal por-- tion and provided with slots forminga, series of elastic bands projecting from Said inar- `ginal portionand'conneeted at their other ends, said bands being adapted to be flexedin unison oy the pressure of the fluid and being completely surroundedby said niarginal portion; means for securing said man ginal portion;and a Valve seat provided with apertures which said'bands overlie andnormally close.

11i. As a new article of manufacture, a Valve-body Aconsisting of anlativelyv thin elastic plate of generally segmental torni having aplurality of bands projecting from said .marginal portion and joined attheir other ends.

15. As a new article of manufacture, a valve-body consisting of arelativelyv thin elastic plate of generally ,segmental form l.. amarginal portion and provided with a nlinrality of slots veri-:elysai/il plate and oiiniit is pre e jeetinggg from said nn rginal petitionend connected to canse tlieni to move together in the oi eration of thevalve. 1S. its a new artiele va' ii-body consisting et elastic plate etei'fll'i' li: fing; 'with a iinral 'versely valve-nodi l elastic platehaving; .i niovifled 'with a pini? traneveselif of said l 'projecting'iom said marginal pei connected to canse 'them to nieve, te

operation o" tlie valve. 18. is a new a'tiele oii valve-body eonsietingof a 1. elastic plate timing margine provided wit-li a plurality oit'sl@ J e transvei'se j; oi said `plate and connected to them t1 ino: theoperation of tlie valve. in testimer l' naine to tl'iis oit twosneserilail e Hanegem:

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